Library for measuring distance with the HC-SR04 UltraSonic Sensor, by utilizing temperature correction and multiple echo pins in parallel. - d03n3rfr1tz3/HC-SR04 ...

MQSensorsLib We present a unified library for MQ sensors, this library allows to read MQ signals easily from Arduino, Genuino, ESP8266, ESP-32 boards whose references are MQ2, MQ3, MQ4, MQ5, MQ6, MQ7, ...

Learn how to interface ESP32 thermal printer with complete tutorial. Includes PNP-500 wiring, Arduino code, circuit diagrams, and projects for receipt printing, barcodes, and QR codes. Perfect for ...